Global Patent Index - EP 2232726 A4

EP 2232726 A4 20150624 - OPEN LOOP PRECODER CYCLING IN MIMO COMMUNICATIONS

Title (en)

OPEN LOOP PRECODER CYCLING IN MIMO COMMUNICATIONS

Title (de)

VORKODIERER-CYCLING IN OFFENER SCHLEIFE BEI DER MIMO-KOMMUNIKATION

Title (fr)

CYCLAGE DE PRÉCODEURS EN BOUCLE OUVERTE DANS DES COMMUNICATIONS MIMO

Publication

EP 2232726 A4 20150624 (EN)

Application

EP 08767141 A 20080507

Priority

  • SE 2008050530 W 20080507
  • US 2094808 P 20080114

Abstract (en)

[origin: WO2009091307A1] Data is transmitted over multiple input multiple output (MIMO) channels. Plural bit streams are modulated into multiple data symbol vectors. Each vector has a transmission rank with one vector for each MIMO channel. Transmission rank is the number of elements in a data symbol vector corresponding to the number of data streams being transmitted in parallel over each MIMO channel. The multiple data symbol vectors are preceded into multiple precoded symbol vectors using a plurality of precoder cycling sets, one set for each transmission rank including multiple different precoders. The precoders in each precoder cycling set are well-separated with respect to a plurality of distance measures. The precoding includes precoding each data symbol vector of a transmission rank with a precoder belonging to the precoder cycling set of that transmission rank. The precoded symbol vectors are then transmitted over the MIMO channels.

IPC 8 full level

H04B 7/06 (2006.01); H04B 7/005 (2006.01); H04B 7/10 (2006.01); H04L 25/03 (2006.01); H04L 27/26 (2006.01)

CPC (source: EP US)

H04B 7/0639 (2013.01 - EP US); H04B 7/10 (2013.01 - EP US); H04L 2025/03426 (2013.01 - EP US)

Citation (search report)

  • [Y] SAMSUNG: "Open-Loop SM for High-speed UEs", 3GPP DRAFT; R1-080052_CDD_HIGH_SPEED, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Sevilla, Spain; 20080108, 8 January 2008 (2008-01-08), XP050108594
  • [Y] SAMSUNG ET AL: "Further Considerations of CDD Precoding for High-speed UEs", 3GPP DRAFT; R1-073566_CDD_HIGH_SPEED_V3, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20070815, 15 August 2007 (2007-08-15), XP050107171
  • [Y] QUALCOMM EUROPE: "Link Analysis of Open Loop SM for High Mobility UE", 3GPP DRAFT; R1-080496, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Sevilla, Spain; 20080109, 9 January 2008 (2008-01-09), XP050109012
  • [Y] LG ELECTRONICS: "Link Performance Comparison between Open-loop SM Candidates", 3GPP DRAFT; R1-080273, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Sevilla, Spain; 20080109, 9 January 2008 (2008-01-09), XP050108795
  • [Y] HEATH R W JR ET AL: "Limited Feedback Unitary Precoding for Orthogonal Space-Time Block Codes", IEEE TRANSACTIONS ON SIGNAL PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 53, no. 1, 1 January 2005 (2005-01-01), pages 64 - 73, XP011123807, ISSN: 1053-587X, DOI: 10.1109/TSP.2005.851109
  • [Y] BARG A ET AL: "Bounds on packings of spheres in the Grassmann manifold", IEEE TRANSACTIONS ON INFORMATION THEORY, IEEE PRESS, USA, vol. 48, no. 9, 1 September 2002 (2002-09-01), pages 2450 - 2454, XP003024247, ISSN: 0018-9448, DOI: 10.1109/TIT.2002.801469
  • See references of WO 2009091307A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2009091307 A1 20090723; CA 2713349 A1 20090723; CA 2713349 C 20160719; CN 101911525 A 20101208; CN 101911525 B 20141203; DK 2232726 T3 20170403; EP 2232726 A1 20100929; EP 2232726 A4 20150624; EP 2232726 B1 20170208; EP 3169001 A1 20170517; EP 3169001 B1 20200226; ES 2624635 T3 20170717; JP 2011512062 A 20110414; JP 5269098 B2 20130821; PL 2232726 T3 20170831; PT 2232726 T 20170502; RU 2010133993 A 20120227; RU 2452129 C2 20120527; US 2010284484 A1 20101111; US 8537924 B2 20130917; ZA 201003248 B 20110727

DOCDB simple family (application)

SE 2008050530 W 20080507; CA 2713349 A 20080507; CN 200880125217 A 20080507; DK 08767141 T 20080507; EP 08767141 A 20080507; EP 16206576 A 20080507; ES 08767141 T 20080507; JP 2010542191 A 20080507; PL 08767141 T 20080507; PT 08767141 T 20080507; RU 2010133993 A 20080507; US 81215908 A 20080507; ZA 201003248 A 20100507